Last month, strangely, a build of Windows 8 desktop — dubbed Jupiter, which is the codename for “Immersive” Metro apps — cropped up in the ‘I’m a WP7′ Windows Phone app which lists out the build numbers of the OSes that users install the app on. Considering the rumored switch to the NT kernel in Windows Phone 8, it was speculated that, assuming that the build number wasn’t spoofed at all to begin with, Microsoft was simply performing some internal testing of Apollo.

On Tuesday, WPCentral reported that yet another prospective future Windows Phone build was spotted in the app. Build 8.0.9662.0, sporting the Apollo codename and ‘Windows Phone 8.0′ version was spotted by users of the app in the device statistics area. But could it be fake? The developer of the I’m a WP7 app weighed in, stating:

“It’s running from an Emulator, doesn’t appear to be spoofed, is using the default Emulator location, and the Time Zone Offset lines up with Pacific Coast…”

WPCentral also report that Windows Phone 8 began internal dogfooding within Microsoft on March 30. So, with the information we have, it seems legit. And it’s likely that someone internally decided to have some fun and do a little teasing of the blogosphere by using this app in their test scenario.

I founded and regularly wrote blog posts on GeekSmack from 2008 until 2011, when I failed at running a blog. I now write about Microsoft for Techie-Buzz. When not writing blog posts, I'm usually found designing websites and learning how to code. You should follow me on Twitter here.